Which sort of Hoverfly?

Which sort of Hoverfly?

Observation - Which sort of Hoverfly?. Description: There were several hoverflies around the scabious flower, and I wondered which sort it was - I believe there are many! Sorry it's not a better picture - they move rather fast, and I only had my Blackberry with me!

There were several hoverflies around the scabious flower, and I wondered which sort it was - I believe there are many! Sorry it's not a better picture - they move rather fast, and I only had my Blackberry with me!